Brush construction



e. A. BAUER. BRUSH CONSTRUCTION.

Pm'wa Feb. 28, 1922 UNYYED STATES PATENT OFFICE.

GUSTAVUS a. BAUER, or CHICAGO, runners, nssirenon 1T0 rineaoMALNUFAGTURING COMPANY, OF WARSAW, INDIANA, A oonrone'rron or INDIANA.

BRUSH CONSTRUCTION.

Application filed March 10, 1921.

To all whom 2'15 may concern:

Be it known that I, GUs'rAvUs A. BAUER, a citizen of the United Statesof America, and resident -*of Chicago, Cook County, Illinois, haveinvented a certain new and useful Tmprovement in Brush Constructions,'ofwhich. the following is a specification.

My invention relates to an improvement in brush construction, and morespecifically to an improved and ellicient means for securing a tuft ofbristles within a recess in the brush spindle.

My invention is particularly adapted for use in connection with brushesin which the spindle is made ofmetal or other hard material, and by myinvention the attaching means for the tufts of bristles do not projecton to the surface of the spindle, so that the spindle is provided with aclear plane surface between the various tufts of bristles, so

that lint or other material will'not collect upon the spindle when thebrush is being used.

The features and objects of my invention will be more readily understoodby having reference to the accompanying drawings, in which I haveillustrated my invention in connection with a brush of the typeparticularly adapted for use in carpet cleaners.

Figure 1 is a side elevation of a section of a brush embodying thefeatures of my invention, one of the tufts of bristles being removed.

Fig. 2 is a transverse sectional view.

Fig. 3 is a longitudinal sectional view of 'a portion of the brush.

As illustrated, the brush consists of a cylindrical spindle at, whichispreferably made of metal, within which is secured a series of tufts ofbristles 5. Each of these tufts of bristles are inserted within acylindrical recess 6 in the spindle t, and are held within this recessby an attaching wire 7. These tufts .of bristles are formed by foldingthe bristles at their center and the wire 7 is formed with a hook at oneend which passes around-the bristles. This attaching wire is providedwith an elongated shank 8 which, when the tufted bristles and attachingwire are inserted within the recess 6, projects through the opening 9which is bored through the spindle 4 to the opposite side Specificationof Letters Patent.

Patented Feb. 28, 1922.

Serial No. 451,175.

wire is thus riveted in position, it operates to firmly and securelyhold the tufts of bristles in position. l/Vhen a pulling strain isexerted on the bristles, it willtend to straighten the hook portion ofthe attaching wire and the end 11 will be forced against the side of therecess 6. This engagement will prevent the straightening of this hookportion, and thus prevent the bristles from being pulled out of therecess in the spindle.

It will thus be seen that I have devised a very simple and efficientattaching means for the tufts of bristles which is particularly adaptedfor use in connection with metallic spindles or spindles made of someother material which is of such hardness that the ordinary staple cannotbe driven into the same. Furthermore, by reason of the freeuninterrupted surface of the brush spindle, my invention produces abrush which is very eflicient for use in connection with carpet cleaningmachines, as no% dustor lint will catch on the brush spindle.

What I claim as my invention is:

1. In a brush construction, a spindle having a recess therein, a foldedtuft of bristles inserted within said recess, an at taching wire forsecuring said bristles within said recess, said attaching wire beingprovided with a hooked end portion passing around said bristles, one.end of said hook engaging against the bottom of said recess and adjacentthe side wall thereof, the other end of said wire passing through anopening formed, in the bottom of said recess to the opposite side ofsaid spindle, and secured to the spindle, the end of said wire beingsubstantially flush with the surface of said spindle.

2. In a brush construction, a spindle having a recess in one facethereof, a hole ere tending from the bottom of said recess to theopposite surface of said spindle, av tuft the other end of saidattaching member of foldedbristles inserted withinsaidrecess, passingtlnouiglnsaid openingvand. being sean attaching member for securingsaidtuft cured to the Opposite surface of said 3 within said recess,said member beingprospindle. V

Vided With ahooked end portion passing Signed by me Versaw, Ind, this 1day around said bristles, the end of said hook o'f'March, 1921.

engaging against the bottom of said recessg GUSTAVUS A. BAUER.

